In January, 1918, Woodrow Wilson announced that women's suffrage was urgently needed as a "war measure". The House of Representatives passed the federal woman suffrage amendment 274 to 138, but it was opposed in the Senate and was defeated in September, 1918. Another attempt in February, 1919 also ended in failure.
In May, 1919, the House of Representatives again passed the amendment 304 to 89 and on June 4, 1919, the Senate finally gave in and passed it by 66 to 30. On August 26, 1920, the Nineteenth Amendment was certified by the Secretary of State, when Tennessee, the 36th and final state needed signed for ratification.